Sr ISSO

Leidos has a new and exciting opportunity for a Senior Information System Security Officer (ISSO) in our National Security Sectors (NSS) Cyber & Analytics Business Area (CABA). Our talented team is at the forefront in Security Engineering Computer Network Operations (CNO) Mission Software Analytical Methods and Modeling Signals Intelligence (SIGINT) and Cryptographic Key Management. At Leidos we offer competitive benefits including Paid Time Off 11 paid Holidays 401K with a 6 company match and immediate vesting Flexible Schedules Discounted Stock Purchase Plans Technical Upskilling Education and Training Support Parental Paid Leave and much more. Join us and make a difference in National Security!

The Sr. ISSO will support a large software development program which includes software maintenance and development IT support (Network/Workstation/Server) systems integration and life cycle support enterprise application development network engineering and information systems security (ISS). The candidate will work with other security professionals in developing and implementing strategies to detect and mitigate threats to information systems protect critical data sets and provide assessments of system and network vulnerabilities.

Primary Roles and Responsibilities

• Provide support for implementing and enforcing information systems security policies standards and methodologies.

• Assist in the evaluation of security solutions to ensure they meet security requirements for processing multiple types of information.

• Assist with the Configuration Management for information system security software hardware and firmware.

• Analyze threats and develop and implement best practice methodologies for incident detection reporting and vulnerability remediation.

• Maintain records on workstations servers routers firewalls intelligent hubs network switches etc. to include system upgrades.

• Evaluate security solutions to ensure they meet security requirements for processing information.

• Maintain operational security posture for information systems.

• Provide support to the Information System Security Manager (ISSM) for maintaining the appropriate operational IA posture for a system/program/enclave.

• Develop and maintain documentation for Certification & Accreditation in accordance with specified policies.

• Develop and update system security plans and other IA documentation.

• Provide support for Information Assurance Vulnerability Alerts (IAVAs) management (initiating IAVA responses and system security scans completing remediation extending IAVA patches and security updates to designated sites etc..

• Provide CM for securityrelevant information system software hardware and firmware.

• Develop system security policy and ensure compliance.

• Administer the user identification and authentication mechanisms of the Information System.

Basic Qualifications

• Requires a MS degree and 15 20 years of prior relevant experience.

• An active TS/SCI with polygraph security clearance up front.

• Must have at least 10 years of experience as ISSO working independently and/or on teams maintaining secure information system operations in isolated connected and standalone environments.

• Must have at least 5 years of experience using tools to support IAVA management.

• Must have at least 5 years of experience using tools to support the preparation maintenance and management of SSPs and other security related documentation.

• Demonstrated knowledge of and experience with several of the following: current security tools; hardware/software security implementation; communication protocols; encryption techniques/tools.

• Indepth experience completing security evaluations of software systems or architectures to ensure they meet security requirements.

• Indepth experience proposing coordinating implementing and enforcing information systems security policies standards and methodologies preferably on a large software or IT program.

• Demonstrated experience performing daytoday security operations of large complicated information and information processing systems.

• Must be committed to developing and adhering to best practices.

• Must possess a high level of selfinitiative and must be a solutionsoriented team player.

• Must have excellent interpersonal skills.

Preferred Qualifications

• Extensive experience as an Information Systems Security Officer on large software development and integration programs.

• DoD 8570 compliance with IAT Level II or higher.

• DoD 8570 compliance with IAM Level II or higher.

At Leidos the opportunities are boundless. We challenge our staff with interesting assignments that allow them to thrive professionally and personally. For us helping you grow your career is good business. We look forward to learning more about you apply today.

Posting:April 21 2025

For U.S. Positions: While subject to change based on business needs Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:

The Leidos pay range for this job level is a general guideline onlyand not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job education experience knowledge skills and abilities as well as internal equity alignment with market data applicable bargaining agreement (if any) or other law.